期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 589, 期 -, 页码 275-285出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2020.12.122
关键词
Superhydrophobic; Photocatalysis; Molybdenum disulfide; Oil/water separation
资金
- National Natural Science Foundation of China [12004203]
- Natural Science Foundation of Inner Mongolia [2020BS01005]
- Innovation Research Foundation of Beihang University [YCSJ01201910]
This paper reports a superhydrophobic and super-lipophilicity polyurethane-based sponge that has outstanding superhydrophobicity, excellent oil absorption capacity, robust stability in extreme environments, and great oil/water separation ability.
The diffusion of stubborn oils and organic pigments has become a severe environmental pollution problem. Promisingly, the combination of superhydrophobicity and photocatalysis is expected to provide an efficient, economical and simple solution. In this paper, a kind of superhydrophobic and super-lipophilicity polyurethane (PU)-based sponge was reported by a strategy of undergoing ferric tetroxide loading (Fe3O4@PU), polydopamine fixation (PDA-Fe3O4@PU), octadecylamine grafting (ODA-Fe3O4@PU) and molybdenum disulfide loading (MoS2-ODA-Fe3O4@PU) successively. The results show that the MoS2-ODA-Fe3O4@PU sponge exhibits outstanding superhydrophobicity (with maximum water contact angle of 161.64 degrees), excellent oil absorption capacity (60-109 wt/wt), robust stability in extreme environments and great oil/water separation ability. In addition, the MoS2-loaded sponge demonstrates desirable outcomes in decomposing methyl orange and methylene blue under light source, and a dual-functional purification system with a heterogeneous polyurethane-based sponge (the upper part is MoS2-ODA-Fe3O4@PU and the bottom part is MoS2@PU) endowed with superhydrophobicity and photocatalysis can purify water by separating oils and decomposing methylene blue simultaneously. (C) 2021 Elsevier Inc. All rights reserved.
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